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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Provide nourishment for the developing sperm
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
rectal palpation (BSE)
sertoli cells
what has to happen for males for copulation to occur
2. Milk is 15% ________ and 85% __________.
Dairy Cattle milking schedule
mare gestation
dry matter and water
1. more cost effective - 2. powdered milk is in excess production
3. Allows extension of penis without fibro-elastic penis
Jersey Cow
visual evaluation (BSE)
sigmoid flexure
elastrator
4. The more stressed out the male is - the less sperm he is going to produce
things to check for in a breeding soundness exam (BSE)
humans: stress level vs sperm
mare's estrous cycle
Grading choice
5. 24 hours before end of estrus cycle
growth lost from castration methods (knife & band)
Dairy Cattle Lactation (standard)
mare ovulation
oviducts
6. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
eminal vesicles
Dairy calves are removed from cow at birth to...
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
reason for seasonal breeding periods
7. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
accessory sex glands
retractor muscles
Bull's fibro-elastic penis
dry matter and water
8. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.
burdizzo
penis sizes vs delivering methods
sigmoid flexure
pelvis
9. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
Follical Stimulating in females
dry matter and water
Holstein Cow
estrus
10. What about the sperm for a bull which has been castrated but still has testicles?
cervix
Reasons for gestation length being affected
testis (gonads)
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
11. 14-19 (17) days
ewe estrus cycle
pelvis
Size of cow in relation to the amount of milk produced
epididymis: definition - 3 parts - 4 functions
12. Implies the amount of estrogen production
feeding a high producing dairy cow
mastitis
femininity of a heifer
penis and prepuce observation (BSE)
13. ~305 days (altough often longer due to breeding difficulties)
Hormones from both the fetus and the mom.
prostate gland
vagina
Dairy Cattle Lactation (standard)
14. Scar tissue plugs up chambers of udder
mastitis
van deferens
testosterone
#1 cost in production
15. Microscopic - make sure not sterile - very few bulls are actually tested
reason for seasonal breeding periods
things to check for in a breeding soundness exam (BSE)
uterus
semen evaluation (BSE)
16. To remove/separate testicles from animal's body before animal reaches puberty
castration
mastitis
functions of progestrone
estrus
17. Important 'landmark' during palpation
Follical Stimulating in females
Sperm growth rate
cervix
~1 month
18. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total
testis (gonads)
cowper's gland
Dairy calves are removed from cow at birth to...
hormones
19. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
6-8 weeks
Hormones from both the fetus and the mom.
elastrator
20. 114 days
Lutinizing Hormone in males
4 major reasons for culling dairy cows
sow gestation
burdizzo
21. Superior genes are _______ to multiply
Hard
burdizzo
Lutinizing Hormone in females
effects of estrogen
22. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
humans: stress level vs sperm
behavioral signs of estrus
dry-off time in dairy cattle
burdizzo
23. (switzerland) 2nd in size and milk production - most muscle -
ewe estrus cycle
Brown Swiss Cow
prostate gland
Parturition
24. (male) pushes the testes upward toward the body for warmth or protection
mare ovulation
dartos muscle
Dairy Cattle Gestation
penis sizes vs delivering methods
25. Way to know everything is alright with the breeding male
colostrum
penis sizes vs delivering methods
purpose of Breeding Soundness Exam (BSE) for males
sertoli cells
26. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
vagina
purpose of Breeding Soundness Exam (BSE) for males
hormones
testosterone
27. Look for infection - split - and rupture of the penis
cow ovulation
penis and prepuce observation (BSE)
#1 cost in production
Brown Swiss Cow
28. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
sow ovulation
reasons for castration
feeding a high producing dairy cow
4 major reasons for culling dairy cows
29. Contains and regulates the temp of the testes for sperm production
penis and prepuce observation (BSE)
mare estrus
scrotum
polyestrous
30. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
vulva
scrotal circumference (BSE)
behavioral signs of estrus
cow ovulation
31. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
prostaglandin
estrous
Avg. bull specs
prostate gland
32. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
what has to happen for males for copulation to occur
uterus
sow gestation
penis proper
33. Implies the amount of estrogen production
femininity of a heifer
Size of cow in relation to the amount of milk produced
reason for seasonal breeding periods
cremaster muscle
34. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
vagina
sow gestation
ewe ovulation
Reasons for gestation length being affected
35. ~60 days before calving
purpose of Breeding Soundness Exam (BSE) for males
cow gestation
dry-off time in dairy cattle
Dairy Cattle Lactation (standard)
36. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
things to check for in a breeding soundness exam (BSE)
Dairy Cattle milking schedule
sow ovulation
purpose of Breeding Soundness Exam (BSE) for males
37. Parturition is controlled by...
mare estrus
cow ovulation
Hormones from both the fetus and the mom.
rectal palpation (BSE)
38. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
Grading choice
hormones
penis proper
Reasons for gestation length being affected
39. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
sow estrus cycle
burdizzo
effects of BST
estrus
40. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
cervix
cow ovulation
dairy cattle pregnancy check
burdizzo
41. Sperm is produced here
ewe gestation
Reasons for gestation length being affected
reason for seasonal breeding periods
seminiferous tubules
42. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
castration
why does the cow need fat deposits during pregnancy?
spermatogenesis
reason for seasonal breeding periods
43. Why does estrus happen before ovulation?
monestrous
oviducts
colostrum
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
44. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.
mare gestation
cryptorchid
vagina
van deferens
45. Prevent the cow from getting an infection from the calve
Dairy calves are removed from cow at birth to...
dry-off time in dairy cattle
Follical Stimulating in females
sigmoid flexure
46. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
testis (gonads)
prostate gland
hypothalamus and pituitary gland
scrotal circumference (BSE)
47. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
urethra
estrous
Jersey Cow
reason for seasonal breeding periods
48. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
things to check for in a breeding soundness exam (BSE)
age and castration
rectal palpation (BSE)
mare gestation
49. Animal which has been castrated after puberty
reason for seasonal breeding periods
stag
leydid or interstitial cells
Follical Stimulating in males
50. Scar tissue plugs up chambers of udder
estrous
mastitis
monorchid
Jersey Cow